Western blot All lanes: QTRT1 antibody at 6μg/ml Lane 1: MCF-7 whole cell lysate Lane 2: PC-3 whole cell lysate Lane 3: Jurkat whole cell lysate Lane 4: A431 whole cell lysate Secondary Goat polyclonal to rabbit IgG at 1/10000 dilution Predicted band size: 45, 25 kDa Observed band size: 45 kDa
Immunohistochemistry of paraffin-embedded human testis tissue using CSB-PA887150LA01HU at dilution of 1:100
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貨期:
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用途:
For Research Use Only. Not for use in diagnostic or therapeutic procedures.
Catalytic subunit of the queuine tRNA-ribosyltransferase (TGT) that catalyzes the base-exchange of a guanine (G) residue with queuine (Q) at position 34 (anticodon wobble position) in tRNAs with GU(N) anticodons (tRNA-Asp, -Asn, -His and -Tyr), resulting in the hypermodified nucleoside queuosine (7-(((4,5-cis-dihydroxy-2-cyclopenten-1-yl)amino)methyl)-7-deazaguanosine). Catalysis occurs through a double-displacement mechanism. The nucleophile active site attacks the C1' of nucleotide 34 to detach the guanine base from the RNA, forming a covalent enzyme-RNA intermediate. The proton acceptor active site deprotonates the incoming queuine, allowing a nucleophilic attack on the C1' of the ribose to form the product.
基因功能參考文獻:
Homology models of C elegans Tgt and human Tgt suggest that the replacement of Cys158 and Val233 in bacterial Tgt (Zymomonas mobilis) by valine and accordingly glycine in eucaryotic Tgt largely accounts for the different substrate specificities. PMID: 23704982
the inhibition of the human TGT by biopterin, consistent with earlier reports on other eukaryal TGTs, and supportive of the concept that pteridines may regulate eukaryal TGT activity in vivo. PMID: 21640076
phylogenetic and kinetic analyses support the conclusion that all tRNA-guanine transglycosylases have divergently evolved to specifically recognize their cognate heterocyclic substrates. PMID: 21131277